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Cognitive Services pricing—Text Analytics API

Use intelligence APIs to enable vision, speech, language, and knowledge capabilities

Text Analytics API is a cloud-based service which provides advanced natural language processing over raw text and includes three main functions—sentiment analysis, key phrase extraction and language detection.

Pricing details

Text Analytics can be purchased in tiers.

Free Standard S0 Standard S1 Standard S2 Standard S3 Standard S4
Price (per month) $- $- $- $- $- $-
Maximum transactions included in tier 5,000 25,000 1,00,000 5,00,000 25,00,000 1,00,00,000
Overage rate (per 1,000 transactions) N/A $- $- $- $- $-

Support & SLA

  • Free billing and subscription management support are included.
  • We guarantee that Cognitive Services running in the standard tier will be available at least 99.9 percent of the time. No SLA is provided for the free trial. Read the SLA.


Text Analytics

  • The Text Analytics API can be purchased in units of the standard tiers at a fixed price. Each unit of a tier comes with included quantities of API transactions. If the user exceeds the included quantities, overages are charged at the rate specified in the pricing table above. These overages are prorated and the service is billed on a monthly basis. The included quantities in a tier are reset each month.
  • Usage is throttled if the transaction limit is reached on the Free tier. Customers cannot accrue overages on the free tier.
  • Any annotation to a document counts as a transaction. Batch scoring calls will also take into consideration the number of documents that need to be scored in that transaction. So for instance, if 1,000 documents are sent for sentiment analysis in a single API call, that will count for 1,000 transactions. If an API supports more than one annotation operation, that will also be considered. Let’s say an API call performs both sentiment analysis and key-phrase extraction on 1,000 documents, which will count for 2,000 transactions (2 annotations × 1,000 documents).
  • If the usage on a standard tier is exceeded, the account starts to accrue overages. These overages are billed on a monthly basis and are calculated at the rate specified for each tier.
  • You may upgrade to a higher tier at any time. Billing rate and included quantities corresponding to the higher tier will begin immediately.


  • Bing Search APIs are invoiced based on number of transactions (also known as API calls). These plans are pay-as-you-go and does not incur additional cost for complex queries and more than 10 results (up to 50 results in most cases).

  • If you happen to exceed the mentioned number of transactions per second (TPS), your usage will be throttled to be within the mentioned limit. If your application needs to have higher TPS than the ones mentioned on this page, please reach out to the Azure support team.

  • For billing purposes, a transaction is a successful Bing API call request (though there are caveats for DoS attacks). For logging and reporting purposes such as for the Bing Statistics Add-in, it is any Bing API call irrespective of whether it is successful or not.

  • You can change the tier of service anytime. Please make sure you use appropriate keys in your API calls. If you are having enterprise agreement with Microsoft, please work with your account executive.


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